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https://www.readbyqxmd.com/read/28930873/preseason-functional-test-scores-are-associated-with-future-sports-injury-in-female-collegiate-athletes
#1
Jason Brumitt, Bryan Heiderscheit, Robert Manske, Paul E Niemuth, Alma Mattocks, Mitchell J Rauh
Recent prospective cohort studies have reported preseason functional performance test (FPT) measures and associations with future risk of injury; however, the findings associated with these studies have been equivocal. The purpose of this study was to determine the ability of a battery of FPTs as a preseason screening tool to identify female Division III (D III) collegiate athletes who may be at risk for a non-contact time-loss injury to the lower quadrant [LQ = low back and lower extremities]. One hundred six female D III athletes were recruited for this study...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28926856/positive-effects-of-promoting-physical-activity-and-balanced-diets-in-a-primary-school-setting-with-a-high-proportion-of-migrant-school-children
#2
Katharina S Weber, Olaf Spörkel, Melina Mertens, Alem Freese, Klaus Strassburger, Boris Kemper, Clemens Bachmann, Knut Diehlmann, Theodor Stemper, Anette E Buyken, Kerstin Ketelhut, Karsten Müssig
Background Children with migration background are at particular risk for overweight. We assessed the effects of a primary school-based initiative targeted at enhancing physical activity and dietary education among children with a high proportion of migration background. Methods Four 3(rd) and 4(th) grade classes (n=70 children, 77% with migration background) participated in a 10-months intervention comprising 2 additional exercise lessons weekly and 10 nutrition lessons per school year. 6 school classes (n=125 children, 65% with migration background) served as control...
September 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28925816/investigating-the-constrained-action-hypothesis-a-movement-coordination-and-coordination-variability-approach
#3
Anthony Vidal, Will Wu, Mimi Nakajima, James Becker
The purpose of this study was to examine the effects of focus of attention cues on movement coordination and coordination variability in the lower extremity. Twenty participants performed the standing long jump under both internal and external focus of attention conditions. A modified vector coding technique was used to evaluate the influence of attentional focus cues on lower extremity coordination patterns and coordination variability during the jumps. Participants jumped significantly further under an external focus of attention condition compared with an internal focus of attention condition (p = ...
September 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28915864/physical-fitness-and-anthropometric-characteristics-among-adolescents-living-in-urban-or-rural-areas-of-kosovo
#4
Faton Tishukaj, Ismet Shalaj, Masar Gjaka, Besim Ademi, Rrustem Ahmetxhekaj, Norbert Bachl, Harald Tschan, Barbara Wessner
BACKGROUND: High physical fitness levels in childhood and adolescence are associated with positive health-related outcomes later in life. Albeit many researchers investigated rural-urban differences in physical fitness, the outcomes of these studies are inconsistent and data on Kosovo are widely missing. Thus, this study aims to examine anthropometric and physical fitness parameters in 14 to 15 year old Kosovan adolescents living in rural and urban areas. METHODS: Two schools from Pristina (mostly urban population) and two schools in the surrounding villages of the district of Deçan (mostly rural population) were selected...
September 16, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28912731/long-term-athletic-development-in-youth-alpine-ski-racing-the-effect-of-physical-fitness-ski-racing-technique-anthropometrics-and-biological-maturity-status-on-injuries
#5
Lisa Müller, Carolin Hildebrandt, Erich Müller, Christian Fink, Christian Raschner
Alpine ski racing is known to be a sport with a high risk of injuries. Because most studies have focused mainly on top-level athletes and on traumatic injuries, limited research exists about injury risk factors among youth ski racers. The aim of this study was to determine the intrinsic risk factors (anthropometrics, biological maturity, physical fitness, racing technique) for injury among youth alpine ski racers. Study participants were 81 youth ski racers attending a ski boarding school (50 males, 31 females; 9-14 years)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28902117/factors-influencing-spike-jump-height-in-female-college-volleyball-players
#6
Yusuke Ikeda, Yusuke Sasaki, Shingo Sorimachi, Rena Hamano
The purpose of this study was to examine factors influencing spike jump (SPJ) performance by female competitive volleyball players through comparisons of the kinematic data of SPJ with those of the standing long jump (SLJ) and vertical jump (VJ). Seventeen female competitive volleyball players were asked to perform SPJ, SLJ, and VJ. Motion data of SPJ including the approach phase were recorded. Regarding SLJ and VJ, jumping motion and ground reaction force were recorded during each performance. The results obtained showed that SPJ height correlated with vertical velocity at take-off, horizontal velocity at third step contact, and the deceleration of horizontal velocity from third step contact to take-off...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28890790/evaluating-pair-versus-solitary-housing-in-kennelled-domestic-dogs-canis-familiaris-using-behaviour-and-hair-cortisol-a-pilot-study
#7
Emma K Grigg, Belle Marie Nibblett, James Q Robinson, Judit E Smits
Numerous studies conducted to assess welfare of domestic dogs housed in kennel facilities have reported that these dogs experience suboptimal living conditions. One important goal of improving welfare of kennelled dogs is to reduce their stress levels, and one recommended approach for improving welfare of kennelled dogs is group or social housing. The beneficial effects of management changes designed to achieve this goal should be measurable in individual animals. Stress is evident through behaviours exhibited, as well as via the concentration of cortisol, a key hormone reflecting stress...
2017: Veterinary Record Open
https://www.readbyqxmd.com/read/28889217/best-dispersal-strategies-in-spatially-heterogeneous-environments-optimization-of-the-principal-eigenvalue-for-indefinite-fractional-neumann-problems
#8
Benedetta Pellacci, Gianmaria Verzini
We study the positive principal eigenvalue of a weighted problem associated with the Neumann spectral fractional Laplacian. This analysis is related to the investigation of the survival threshold in population dynamics. Our main result concerns the optimization of such threshold with respect to the fractional order [Formula: see text], the case [Formula: see text] corresponding to the standard Neumann Laplacian: when the habitat is not too fragmented, the principal positive eigenvalue can not have local minima for [Formula: see text]...
September 9, 2017: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/28880175/hyper-lapse-from-multiple-spatially-overlapping-videos
#9
Miao Wang, Jun-Bang Liang, Song-Hai Zhang, Shao-Ping Lu, Ariel Shamir, Shi-Min Hu
Hyper-lapse video with high speed-up rate is an efficient way to overview long videos such as a human activity in first-person view. Existing hyper-lapse video creation methods produce a fast-forward video effect using only one video source. In this work, we present a novel hyper-lapse video creation approach based on multiple spatially-overlapping videos. We assume the videos share a common view or location, and find transition points where jumps from one video to another may occur. We represent the collection of videos using a hyper-lapse transition graph; the edges between nodes represent possible hyper-lapse frame transitions...
September 4, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28875087/tracing-hepatitis-b-virus-hbv-genotype-b5-formerly-b6-evolutionary-history-in-the-circumpolar-arctic-through-phylogeographic-modelling
#10
Remco Bouckaert, Brenna C Simons, Henrik Krarup, T Max Friesen, Carla Osiowy
BACKGROUND: Indigenous populations of the circumpolar Arctic are considered to be endemically infected (>2% prevalence) with hepatitis B virus (HBV), with subgenotype B5 (formerly B6) unique to these populations. The distinctive properties of HBV/B5, including high nucleotide diversity yet no significant liver disease, suggest virus adaptation through long-term host-pathogen association. METHODS: To investigate the origin and evolutionary spread of HBV/B5 into the circumpolar Arctic, fifty-seven partial and full genome sequences from Alaska, Canada and Greenland, having known location and sampling dates spanning 40 years, were phylogeographically investigated by Bayesian analysis (BEAST 2) using a reversible-jump-based substitution model and a clock rate estimated at 4...
2017: PeerJ
https://www.readbyqxmd.com/read/28874580/molecular-mechanism-of-water-reorientational-slowing-down-in-concentrated-ionic-solutions
#11
Qiang Zhang, TianMin Wu, Chen Chen, Shaul Mukamel, Wei Zhuang
Water dynamics in concentrated ionic solutions plays an important role in a number of material and energy conversion processes such as the charge transfer at the electrolyte-electrode interface in aqueous rechargeable ion batteries. One long-standing puzzle is that all electrolytes, regardless of their "structure-making/breaking" nature, make water rotate slower at high concentrations. To understand this effect, we present a theoretical simulation study of the reorientational motion of water molecules in different ionic solutions...
September 5, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28862921/sex-differences-in-elite-performance-track-and-field-competition-from-1983-to-2015
#12
Jonathan Ospina Betancurt, Maria S Zakynthinaki, Maria Jose Martinez-Pariño, Carlos Cordente Martinez, Carmen Rodríguez Fernández
The purpose of this study was to assess the veracity of the Court of Arbitration for Sport's assertion that sex-differences in athletic performance in elite-standard track and field competition is of the order of 10-12%. Exponential curves were fitted to the data of selected track and field events of the finals of all IAAF World Championships and Olympic Games from 1983 to 2016. For each curve, the coefficient of determination R(2) was calculated, in combination the corresponding 95% confidence intervals for the curve constants...
September 1, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28858051/long-term-changes-in-jump-performance-and-maximum-strength-in-a-cohort-of-ncaa-division-i-women-s-volleyball-athletes
#13
Ashley A Kavanaugh, Satoshi Mizuguchi, William A Sands, Michael W Ramsey, Michael H Stone
The purpose of this investigation was to quantify the magnitude of change in maximal strength and jumping abilities over approximately one, two, and three years of supervised sport and resistance training in NCAA Division I women's volleyball athletes. This was an exploratory study on a cohort of women's volleyball athletes (n=29) split into three groups based on length of time spent in a supervised resistance training program: group 1 (n=11): 0.7±0.3 yrs, group 2 (n=9): 1.6±0.2 yrs, and group 3 (n=9): 2...
August 26, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28835280/epidemiological-study-of-suicide-by-physical-methods-between-1993-and-2013-in-ilam-province-iran
#14
Yosra Azizpour, Kourosh Sayehmiri, Khairollah Asadollahi, Satar Kaikhavani, Maryam Bagheri
BACKGROUND: Suicide by aggressive physical methods such as firearms, hanging, and jumping is well known; however, different factors may influence a person while selecting a particular method. The aim of this study was to investigate the epidemiological factors involved in the selection and use of different physical methods for suicide over a long-term period in Ilam province, Iran. METHODS: The present study was conducted retrospectively between 1993 and 2013 using recorded data from a comprehensive system for registration of suicide attempts in Ilam University of Medical Sciences...
August 23, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28831579/social-makes-smart-rearing-conditions-affect-learning-and-social-behaviour-in-jumping-spiders
#15
J Liedtke, J M Schneider
There is a long-standing debate as to whether social or physical environmental aspects drive the evolution and development of cognitive abilities. Surprisingly few studies make use of developmental plasticity to compare the effects of these two domains during development on behaviour later in life. Here, we present rearing effects on the development of learning abilities and social behaviour in the jumping spider Marpissa muscosa. These spiders are ideally suited for this purpose because they possess the ability to learn and can be reared in groups but also in isolation without added stress...
August 22, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28830536/the-preventive-effect-of-the-bounding-exercise-programme-on-hamstring-injuries-in-amateur-soccer-players-the-design-of-a-randomized-controlled-trial
#16
S Van de Hoef, B M A Huisstede, M S Brink, N de Vries, E A Goedhart, F J G Backx
BACKGROUND: Hamstring injuries are the most common muscle injury in amateur and professional soccer. Most hamstring injuries occur in the late swing phase, when the hamstring undergoes a stretch-shortening cycle and the hamstring does a significant amount of eccentric work. The incidence of these injuries has not decreased despite there being effective injury prevention programmes focusing on improving eccentric hamstring strength. As this might be because of poor compliance, a more functional injury prevention exercise programme that focuses on the stretch-shortening cycle might facilitate compliance...
August 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28827684/whole-genome-based-phylogeny-of-reptile-associated-helicobacter-indicates-independent-niche-adaptation-followed-by-diversification-in-a-poikilothermic-host
#17
Maarten J Gilbert, Birgitta Duim, Arjen J Timmerman, Aldert L Zomer, Jaap A Wagenaar
Reptiles have been shown to host a significant Helicobacter diversity. In order to survive, reptile-associated Helicobacter lineages need to be adapted to the thermally dynamic environment encountered in a poikilothermic host. The whole genomes of reptile-associated Helicobacter lineages can provide insights in Helicobacter host adaptation and coevolution. These aspects were explored by comparing the genomes of reptile-, bird-, and mammal-associated Helicobacter lineages. Based on average nucleotide identity, all reptile-associated Helicobacter lineages in this study could be considered distinct species...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28820847/effectiveness-of-a-16-week-high-intensity-cardioresistance-training-program-in-adults
#18
Tina A Greenlee, Daniel R Greene, Nathan J Ward, Ginger E Reeser, Courtney M Allen, Nicholas W Baumgartner, Neal J Cohen, Arthur F Kramer, Charles H Hillman, Aron K Barbey
Greenlee, TA, Greene, DR, Ward, NJ, Reeser, GE, Allen, CM, Baumgartner, NW, Cohen, NJ, Kramer, AF, Hillman, CH, and Barbey, AK. Effectiveness of a 16-week high-intensity cardioresistance training program in adults. J Strength Cond Res 31(9): 2528-2541, 2017-The purpose of this study was to determine the efficacy of a novel, 16-week high-intensity cardioresistance training (HICRT) program on measures of aerobic fitness, agility, aerobic power, muscular endurance, lower-body explosive power, and self-reported activity level...
September 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28815702/a-multicentre-study-of-long-term-follow-up-and-owner-satisfaction-following-enucleation-in-horses
#19
K Wright, J L Ireland, D I Rendle
BACKGROUND: Horses are reported to return to a variety of disciplines following unilateral enucleation; however, owners of horses with ocular disease are frequently reluctant to consider the procedure. There is little published information investigating owners' attitudes towards, and satisfaction following, enucleation. OBJECTIVES: To investigate the hypotheses: 1. horses return to their previous level of work following unilateral enucleation and, 2. their owners are satisfied with the post-operative outcome...
August 16, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28806086/role-of-electrostatics-in-protein-rna-binding-the-global-vs-the-local-energy-landscape
#20
Zhaleh Ghaemi, Irisbel Guzman, David Gnutt, Zaida Luthey-Schulten, Martin Gruebele
U1A protein-stem loop 2 RNA association is a basic step in the assembly of the spliceosomal U1 small nuclear ribonucleoprotein. Long-range electrostatic interactions due to the positive charge of U1A are thought to provide high binding affinity for the negatively charged RNA. Short range interactions, such as hydrogen bonds and contacts between RNA bases and protein side chains, favor a specific binding site. Here, we propose that electrostatic interactions are as important as local contacts in biasing the protein-RNA energy landscape toward a specific binding site...
August 31, 2017: Journal of Physical Chemistry. B
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